Improved horseshoe-machine



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Letters Patent 'No. 93,778,1lated August 17, 1869.v

IMPRO'VED HORSESHE-lV-IACHINE.

The Schedule referred to in theae Letters Patent andmaking part of thesame.

To all whom it may concern.

, which .will enable others skilled in the art to make and use the same,reference being 'had to the accompanying drawings, forming part of thisspecification.

l. This invention relates to improvements in machinery for forminghorseshoe-blanks, and has for its object to provide a simple andeiii'cient arrangement of means for the purpose. The invention consistsin an improved arrangement of oscillating bending-dies, a sliding'former, pressing and creasing-die, and discharger, all as hereinaftermore fully specilied.

Figure 1 represents a front elevation of my improved machine. l

'Figure 2 represents a plan view of the same.

. Figure 3 representsa sectional elevation, taken on the line x a: ofiig-1, looking in the direction of the arrow, and broken out on thedotted line y y.

Figure 4 represents a side elevation.

Similar letters of reference indicate corresponding parts.

A'represents a pair of curved bending-dies, having the curvature at a ofthe exterior lines required for. the shoes.

These dies are connected to the segmental toothed carriers B, pivoted atG,to av centre common to both, and carrying the said diesupon the faceof the bed D of the machine.

The carriers are geared with sliding racks E, which are moved back andforth by segmental toothed wheels F on a transverse oscillating shaft,G, deriving motion from the main driving-shaft I, by a connecting-rod,H, having a slottedeonnectiou with the wristpin K of the crank on themain shaft I, and -a guide, L, working in a groove, M, at the side ofthe machine.

The said slot, wherein the wrist-pin works, is so formed as to permitthe dies to dwell after bending the blanks until a creasing andpressing-punch acts upon the blanks.

N represents a former, around which the bar is to be bent by the dies A.

It is shaped according to the interior form required .for the shoe, andis moved forward at the propertime by the oscillating shaft O andtoothed segment P, nearly to a fixed block or die, Q, at the axisof the`dies A.

The bar, preferably cut into the lengths required for' the shoes andheated, is inserted through the hole R, and in advance of the dies'A andblock Q.

The former N then moves up and clamps the bar against the said block Q,to prevent twisting or moving out of place, and then the bending-diesare set into motion, and bend the bar up snugly around the former N.

These bending-dies hold the blank in this position until the pressingand creasing-punch S is brced down upon the top to press and crease it.

This movement of the die or punch is effected by a cam, T, on the shaftI, which is directly above the punch S, the stock of which is slottedfor the shaft to pass through it. Itis also slotted inthe oppositedirection, to give freedom to the said cam T.

This said stock is raised after the pressing and creasing-operation byanother cam, U, on the. same shaft, taking under a projection, V, fromone side of the top ofthe stock.

This cam gives thcstock a further upward I'novement than could be doneby the cam T, which,l to be sllciently powerful to do the pressing andcreasing, is necessarily short.

- Its shape is also required to be such as to perform the operationquickly, while it is required that the cani U shall be so shaped as tohold the stock out of action for a considerable part of the time of onerevolution.

After the pressing and creasing-operation, the dies A open, the stamp Srises, and the former N retreats, with the blanlradhering to it, over auopening, W, in thev base-plate and 'under a discharger, X, which isforced down by a tappet, Y, ou the shaft I, knocking the blank oifthrough the said opening. This discharger is thrown back by a spring, Z.

The oscillating 'shaft O is operated from the main shaft I, by two cams,Z1 and Z2, an'd a connecting-rod, Z3, yoked around the shaft I.

The heated bar may be fed in without cutting o, and be cut by one of thedies A, but I prefer irst cutting it.

Adjustable stops may be arranged to 'arrest'the bars at the rightposition relatively to the dies A.

These dies are so connected to the carriers B as to be readily detachedfor the substitution of others of different sizes.

vHaving-thus described my invention,

I claim as new, and desire to secure by Lett-ers Patcnt- 1. The curveddetachable dies A, die-carriers B, die-block Q, and reciprocating formerN, combined, constructed, and arranged substantially as specified.

2. The combination, with the dies A, of the former N and die-block Q,when arranged and operated suhstantially as speciied.

3. The arrangement of the reciprocating former N and discharger X,substantially as specified.

4. 4'The arrangement of the stock of the pressing'- die S, cam T, andcam U, for operation in the order specified.

Witnesses: CHARLES P. WILLIAMSON.

SAM. I?. SNEAD,

JAS. OBRYAn.

